OH CT 12s
Unique – uses propane with no need for an on-site safety plan (up to 18 kW)
Natural refrigerant R-290 (propane)
Swiss development and production
Simple and flexible installation
Scarcely audible
High flexibility of hydraulic connections
Highest efficiency (SCOP 5.3 à B0/W35 resp. 6.2 à B5/W35)
Secure, no on-site safety concept required
Product information
Description
This compact geothermal heat pump with inverter technology is developed and produced in Münsingen – for maximum efficiency and low operating costs. It is ideal for single-family homes and apartment buildings with radiators and underfloor heating, reliably covering heating and hot water requirements. The heat pump is designed to keep installation costs very low: it scores with its proven and optimised all-in-one concept, in which components required for installation, such as circulation pumps, DHW changeover valve and emergency heating element, are already built in. It also features flexible pipe routing that can be adapted to the room. Thanks to the low refrigerant charge, there is no need for a site-specific safety concept for propane. In addition to heating and hot water preparation, free cooling is also possible. Several units can be combined if required. The heat pump is barely audible during operation and can be conveniently operated via the integrated display or app. The heat pump can be easily integrated into an energy management system, thus contributing to an increase in the self-consumption of photovoltaic systems. We recommend a LAN connection via the router provided by the building owner.
Technical info
- Natural refrigerant R-290 (propane)
- Power-regulated compressor
- Cascadable
- Touch display for easy commissioning and operation
- Prepared for network connection
- Ready for electrical and hydraulic connection
Integrated components
- Two highly efficient circulating pumps
- Emergency heating element
- DHW switching valve
- Brine expansion tank (with OH CT 18s on site)
- Heat quantity recorder
- Flow sensors
Technical specifications
| Source B0 / Heating W35 | 4.7 |
| Source B0 / Heating W35 | 5.3 |
| Source B5 / Heating W35 | 6.2 |
| Heating W35 | A+++ |
| Heating W55 | A+++ |
| Source B0 / Heating W35 | 2 - 12 kW |
| Source B0 / Heating W55 | 1.6 - 10.7 kW |
| Source B0 / Heating W75 | 1.8 - 5.7 kW |
| Dimensions (D × W × H) | 707x596x1250 mm |
| Flow temperature | 25 - 75 °C |
| Weight | 170 kg |
| Heat source temperature | -6 - 25 °C |
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Showing contacts near Bern.
Dominic Plüss
Technical sales consultant for heatpumps Biel, Seeland in Bern
Nicolas Jeanneret
Technical sales consultant for heatpumps Soleure et Langenthal
Urs Häusermann
Technical sales consultant for heatpumps Aargau West




